Hey dude, my first suggestion would be to add bass. It's uber important to have that low end in order to get a good mix. One thing I can say about your drums is that the kick isn't as clear as I would like. That's just me. Start by reducing the 200hz area and boosting anywhere from 6000hz-10000hz for that nice metal click. It's hard to say much else because so much is riding on the bass. Cheers!